Re: Dynamic Zero Padding.
On Wed, Jun 8, 2011 at 4:56 AM, Terry Reedy tjre...@udel.edu wrote:
On 6/7/2011 7:05 PM, John Posner wrote:
You might want to try new style string formatting [1], which I think
is better than the old style in this particular case:
Testing {0:0{1}d}.format(42, 4)
'Testing 0042'
Testing {0:0{1}d}.format(42, 9)
'Testing 00042'
One cannot use a nested field in the 'name' part of the field (before the
':' (I tried), but are pretty free to nest in the actual specification part
after the ':'.
'{0:{1}}'.format(7,'b')
'111'
'{0:{1}}'.format(7,'d')
'7'
Thanks all for the many good suggestions - I am looking over them and
reading the referenced docs.
Cheers,
Fred.
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Dynamic Zero Padding.
Hello All, I want to print some integers in a zero padded fashion, eg. : print(Testing %04i % 1) Testing 0001 but the padding needs to be dynamic eg. sometimes %05i, %02i or some other padding amount. But I can't insert a variable into the format specification to achieve the desirable padding. I would be much obliged if someone can give me some tips on how to achieve a variably pad a number. Cheers, Fred. Thanks, Fred. -- http://mail.python.org/mailman/listinfo/python-list
Re: Dynamic Zero Padding.
On Tue, Jun 7, 2011 at 2:36 PM, Friedrich Clausen f...@derf.nl wrote: Hello All, I want to print some integers in a zero padded fashion, eg. : print(Testing %04i % 1) Testing 0001 but the padding needs to be dynamic eg. sometimes %05i, %02i or some other padding amount. But I can't insert a variable into the format specification to achieve the desirable padding. I would be much obliged if someone can give me some tips on how to achieve a variably pad a number. http://docs.python.org/library/stdtypes.html#str.zfill Cheers, Chris -- http://mail.python.org/mailman/listinfo/python-list
Re: Dynamic Zero Padding.
Friedrich Clausen wrote:
I want to print some integers in a zero padded fashion, eg. :
print(Testing %04i % 1)
Testing 0001
but the padding needs to be dynamic eg. sometimes %05i, %02i or some
other padding amount. But I can't insert a variable into the format
specification to achieve the desirable padding.
I would be much obliged if someone can give me some tips on how to
achieve a variably pad a number.
:)
('%%0%dd' % (pads,)) % (n,)
Probably be good to wrap it in a function. It looks kind of obscure as it
is.
Mel.
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Re: Dynamic Zero Padding.
On 6/7/2011 2:36 PM Friedrich Clausen said... Hello All, I want to print some integers in a zero padded fashion, eg. : print(Testing %04i % 1) Testing 0001 but the padding needs to be dynamic eg. sometimes %05i, %02i or some other padding amount. But I can't insert a variable into the format specification to achieve the desirable padding. I would be much obliged if someone can give me some tips on how to achieve a variably pad a number. Something like this works: for ii in ((3,12),(4,140),(5,123)): ... print (Testing %%%02ii % ii[0]) % ii[1] ... Testing 012 Testing 0140 Testing 00123 Emile -- http://mail.python.org/mailman/listinfo/python-list
Re: Dynamic Zero Padding.
Friedrich Clausen wrote: Hello All, I want to print some integers in a zero padded fashion, eg. : print(Testing %04i % 1) Testing 0001 but the padding needs to be dynamic eg. sometimes %05i, %02i or some other padding amount. But I can't insert a variable into the format specification to achieve the desirable padding. I would be much obliged if someone can give me some tips on how to achieve a variably pad a number. -- width = 3 -- print(Testing %0*i % (width, 1)) Testing 001 -- width = 7 -- print(Testing %0*i % (width, 1)) Testing 001 The '*' acts as a place holder for the width argument. ~Ethan~ -- http://mail.python.org/mailman/listinfo/python-list
RE: Dynamic Zero Padding.
Python 2.6.x
'test {0:.2f}'.format(1)
'test 1.00'
'test {0:{1}f}'.format(1,2)
'test 1.00'
'test {0:{1}f}'.format(1,.2)
'test 1.00'
'test {0:.{1}f}'.format(1,2)
'test 1.00'
Ramit
Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology
712 Main Street | Houston, TX 77002
work phone: 713 - 216 - 5423
-Original Message-
From: python-list-bounces+ramit.prasad=jpmchase@python.org
[mailto:python-list-bounces+ramit.prasad=jpmchase@python.org] On Behalf Of
Friedrich Clausen
Sent: Tuesday, June 07, 2011 4:37 PM
To: python-list@python.org
Subject: Dynamic Zero Padding.
Hello All,
I want to print some integers in a zero padded fashion, eg. :
print(Testing %04i % 1)
Testing 0001
but the padding needs to be dynamic eg. sometimes %05i, %02i or some
other padding amount. But I can't insert a variable into the format
specification to achieve the desirable padding.
I would be much obliged if someone can give me some tips on how to
achieve a variably pad a number.
Cheers,
Fred.
Thanks,
Fred.
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Re: Dynamic Zero Padding.
Friedrich Clausen wrote: I would be much obliged if someone can give me some tips on how to achieve a variably pad a number. b='04' a=testing %+b+i print(a % 1) testing 0001 kind regards, m harris -- http://mail.python.org/mailman/listinfo/python-list
Re: Dynamic Zero Padding.
On 07/06/2011 22:36, Friedrich Clausen wrote: Hello All, I want to print some integers in a zero padded fashion, eg. : print(Testing %04i % 1) Testing 0001 but the padding needs to be dynamic eg. sometimes %05i, %02i or some other padding amount. But I can't insert a variable into the format specification to achieve the desirable padding. I would be much obliged if someone can give me some tips on how to achieve a variably pad a number. Testing %0*i % (4, 1) 'Testing 0001' Testing %0*i % (5, 1) 'Testing 1' -- http://mail.python.org/mailman/listinfo/python-list
Re: Dynamic Zero Padding.
Ethan Furman wrote: -- print(Testing %0*i % (width, 1)) The '*' acts as a place holder for the width argument. very nice... -- http://mail.python.org/mailman/listinfo/python-list
Re: Dynamic Zero Padding.
On Wed, Jun 8, 2011 at 7:43 AM, Mel mwil...@the-wire.com wrote:
:)
('%%0%dd' % (pads,)) % (n,)
Probably be good to wrap it in a function. It looks kind of obscure as it
is.
Would get rather pretty (read: ugly and impossible to read) if you
wanted to put a literal percent sign in front of the number.
:)
Chris Angelico
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Re: Dynamic Zero Padding.
Friedrich:
snip
I would be much obliged if someone can give me some tips on how to
achieve a variably pad a number.
:)
('%%0%dd' % (pads,)) % (n,)
Probably be good to wrap it in a function. It looks kind of obscure as it
is.
You might want to try new style string formatting [1], which I think
is better than the old style in this particular case:
Testing {0:0{1}d}.format(42, 4)
'Testing 0042'
Testing {0:0{1}d}.format(42, 9)
'Testing 00042'
HTH,
John
[1] http://docs.python.org/library/string.html, Section 7.1.2 String
Formatting
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Re: Dynamic Zero Padding.
On 06/07/2011 03:01 PM, harrismh777 wrote: Ethan Furman wrote: -- print(Testing %0*i % (width, 1)) The '*' acts as a place holder for the width argument. very nice... It works for precision as well as width. wid = 10 prec = 3 num = 123.456789 print %0*.*f % (wid, prec, num) gives you - 000123.457 (It's the same as the printf() function in C.) -=- Larry -=- -- http://mail.python.org/mailman/listinfo/python-list
Re: Dynamic Zero Padding.
On 6/7/2011 7:05 PM, John Posner wrote:
You might want to try new style string formatting [1], which I think
is better than the old style in this particular case:
Testing {0:0{1}d}.format(42, 4)
'Testing 0042'
Testing {0:0{1}d}.format(42, 9)
'Testing 00042'
One cannot use a nested field in the 'name' part of the field (before
the ':' (I tried), but are pretty free to nest in the actual
specification part after the ':'.
'{0:{1}}'.format(7,'b')
'111'
'{0:{1}}'.format(7,'d')
'7'
--
Terry Jan Reedy
--
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